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Frequency Resolved Photoluminescence (PL), Delayed Fluorescence and Triplet-Triplet Annihilation In 7Φ-Conjugated Polymers

Published online by Cambridge University Press:  10 February 2011

J. Partee
Affiliation:
Ames Laboratory – USDOE, Iowa State University, Ames, IA 50011 Physics and Astronomy Department, Iowa State University, Ames, IA 50011
E. L. Frankevich
Affiliation:
Ames Laboratory – USDOE, Iowa State University, Ames, IA 50011 International Institute of Theoretical and Applied Physics, Iowa State University, Ames, IA 50011 Institute of Energy Problems of Chemical Physics, Moscow 334, Russia
B. Uhlhom
Affiliation:
Ames Laboratory – USDOE, Iowa State University, Ames, IA 50011 Physics and Astronomy Department, Iowa State University, Ames, IA 50011
J. Shinar
Affiliation:
Ames Laboratory – USDOE, Iowa State University, Ames, IA 50011 Physics and Astronomy Department, Iowa State University, Ames, IA 50011 International Institute of Theoretical and Applied Physics, Iowa State University, Ames, IA 50011
Y. Ding
Affiliation:
Ames Laboratory- USDOE and Chemistry Department, Iowa State University, Ames, IA 50011
T. J. Barton
Affiliation:
Ames Laboratory- USDOE and Chemistry Department, Iowa State University, Ames, IA 50011
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Abstract

The delayed fluorescence of poly(p-phenylene vinylene) (PPV) and poly(p-phenylene ethynylene) (PPE) derivative solids and frozen solutions at 20 K is described. It provides strong evidence for triplet-triplet annihilation to singlets excitons accounting for up to ∼3% of the total emission in PPV films and ∼1.5% in PPE powder. It also yields triplet lifetimes of 70 and 110 μs in PPV films and frozen solutions, and ∼200 and ∼500 μs in PPE powder and frozen solutions, respectively.

Type
Research Article
Copyright
Copyright © Materials Research Society 1999

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References

REFERENCES

1 Proceedings of the International Conference of the Science and Technology of Synthetic Metals, edited by Vardeny, Z. V. and Epstein, A. J., Syn. Met. 84–86 (1997).Google Scholar
2 Azumi, T. and McGlynn, S. P., J. Chem. Phys. 39, 1186 (1963); R. G. Kepler, J. C. Caris, P. Avakian, and E. Abramson, Phys. Rev. Lett. 10, 400 (1963); C. E. Swenberg, J. Chem. Phys. 51, 1753, (1969).Google Scholar
3 Conwell, E. M. and Mizes, H. A., Phys. Rev. B 51, 6953 (1995); H. A. Mizes and E. M. Conwell, Syn. Met. 68, 145, (1995).Google Scholar
4 Colaneri, N. F. et al., Phys. Rev. B 42, 11670 (1990); J. Ralhe, N. F. Colaneri, D. D. C. Bradley, R. H. Friend, and G. Wegner, J. Phys.: Condens. Matter 2, 5465, (1990).Google Scholar
5 Graupner, W., Partee, J., Shinar, J., Leising, G., Scherf, U., Phys. Rev. Lett. 77, 2033, (1996).Google Scholar
6 Dyakonov, V., Résler, G., Schwoerer, M., and Frankevich, E. L., Phys. Rev. B 56, 3852, (1997).Google Scholar
7 Swanson, L. S., Shinar, J., and Yoshino, K., Phys. Rev. Lett. 65, 1140, (1990).Google Scholar
8 Swanson, L. S., Lane, P. A., Shinar, J., and Wudl, F., Phys. Rev. B 44, 10617, (1991).Google Scholar
9 Wei, X., Hess, B. C., Vardeny, Z. V., and Wudl, F., Phys. Rev. Lett. 68, 666, (1992).Google Scholar
10 Ni, Q.-X. et al., Syn. Met. 49–50, 447, (1992).Google Scholar
11 Swanson, L. S., Shinar, J., Ding, Y. W., and Barton, T. J., Syn. Met. 55–57, 1, (1993).Google Scholar
12 Pichler, K., Halliday, D. A., Bradley, D. D. C., Bum, P. L., Friend, R. H., and Holmes, A. B., J. Phys.: Cond. Matt. 5, 7155 (1993); S. V. Frolov, M. Liess, P. A. Lane, W. Gellerman, Z. V. Vardeny, M. Ozaki, and K. Yoshino, Phys. Rev. Lett. 78, 4285, (1997).Google Scholar
13 Ding, Y., Ph.D. Thesis, Iowa State University, Ames, IA, 1994 (unpublished).Google Scholar
14 Shinar, J., Swanson, L. S., Ding, Y. W., Barton, T. J., and Vardeny, Z. V., US Patent 5,352,906 (1994); J. Shinar, L. S. Swanson, F. Lu, and Y. W. Ding, US Patent 5,334,539 (1994).Google Scholar
15 Weder, C. and Wrighton, M. S., Macromol. 29, 5157, (1996).Google Scholar
16 The sample was the same as that used for the studies published in ref. 18.Google Scholar
17 Synthesized by Long, M. De, Physics Dept., University of Utah, Salt Lake City, UT 84112.Google Scholar
18 Frankevich, E. L., unpublished results.Google Scholar
19 Lane, P. A., private communication.Google Scholar
20 Beljonne, D. et al., J. Chem. Phys. 105, 3868, (1996).Google Scholar
21 Warman, J. M. et al., in Optical Probes of Conjugated Polymers, edited by Vardeny, Z. Valy and Rothberg, L. J., SPIE Conf. Proc. 3145, 142, (1997).Google Scholar
22 Bradley, D. D. C. and Friend, R. H., J. Phys. Condensed Matter 1, 3671 (1989); K. E. Ziemelis, A. T. Hussain, D. D. C. Bradley, R. H. Friend, J. Rohe, and G. Wegner, Phys. Rev. Lett. 66, 2231, (1991).Google Scholar
23 Vardeny, Z. V. and Wei, X., Mol. Cryst. Liq. Cryst. 256, 465 (1994).Google Scholar